兼容ios4及ios5的自定义navigationbar的rightBarButtonItem

最新推荐文章于 2025-11-23 10:23:09 发布

原创最新推荐文章于 2025-11-23 10:23:09 发布 · 2.4k 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#ios5 #ios #search #action

iphone 专栏收录该内容

46 篇文章

订阅专栏

本文介绍了一种在iOS不同版本中实现自定义搜索按钮的方法。对于iOS 5及以上版本，使用UIBarButtonItem结合系统提供的搜索图标；对于iOS 4及以下版本，则通过UIButton手动创建并设置背景图片来模拟搜索按钮的行为。

if ([[[UIDevice currentDevice] systemVersion] intValue] >= 5) {      //for ios5.*
            UIBarButtonItem *rbtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSearch target:self action:@selector(search:)];
            UIImage *rightBarBtn = [[UIImage imageNamed:@"barBtn"] resizableImageWithCapInsets:UIEdgeInsetsMake(0.0, 5.0, 0.0, 5.0)];
            [rbtn setBackgroundImage:rightBarBtn forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
            self.navigationItem.rightBarButtonItem = rbtn;
            [rbtn release];
        }
        else {      //for ios4.*
            UIImage *searchImg = [UIImage imageNamed:@"searchImg"];
            UIButton *searchBtn = [UIButton buttonWithType:UIButtonTypeCustom];
            searchBtn.frame = CGRectMake(0, 0, 40, 30);
            [searchBtn addTarget:self action:@selector(search:) forControlEvents:UIControlEventTouchUpInside];
            [searchBtn setBackgroundImage:searchImg forState:UIControlStateNormal];
            searchBtn.backgroundColor = [UIColor clearColor];
            UIBarButtonItem *searchBarBtn = [[UIBarButtonItem alloc] initWithCustomView:searchBtn];
            self.navigationItem.rightBarButtonItem = searchBarBtn;
            [searchBarBtn release];
        }